BIO-FILTRATION STEP USE IN DRINKING WATER TREATMENT
Journal: Scientific Bulletin Series F Biotechnologies (Vol.18, No. 1)Publication Date: 2014-07-01
Authors : Dumitru VÂJU; Grigore VLAD; Mihaela HETVARY; Gabriela BAISAN; Sorin Claudiu ULINICI;
Page : 196-203
Keywords : bio-filtration; electrochemical treatment; multiple oxidants; ammonia; drinking water;
Abstract
The paper presents a case study, for the drinking water plants which involve a bio-filtration step used to reduce simultaneously, certain pollutants (iron, manganese, ammonia) in a single stage filtration. The bio-filtration step, with microorganisms multimedia doped layers was compared with a classic filtration step. The new approach shows the advantage of: higher yields of water pollutants reduction at low specific energy consumption. The bio-filtration process is preceded by an electrochemical pre-treatment whose role is: oxidation of dissolved substances from water, turn non biodegradable organic substances in biodegradable, favour coagulation and flocculation processes, bio-filtration process improvement. In order to optimize the process, was developed and validated a mathematical model of biofiltration process.
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